| Electronics > Projects, Designs, and Technical Stuff |
| SonicWALL SRA 4200. Hardware hacking! |
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| Monkeh:
--- Quote from: pappkopp on December 13, 2013, 01:21:53 pm --- --- Quote from: Monkeh on December 12, 2013, 10:26:49 pm --- --- Quote from: pappkopp on December 12, 2013, 10:26:02 pm ---Regarding the VIA chip, isn't that the Disk Controller? --- End quote --- No.. did you read the datasheet you posted? --- End quote --- I guess that the "Floppy disk" is under the genre of Compact flash disk? --- End quote --- Guessing won't get you very far. |
| TheBay:
Compact flash is IDE not a floppy controller. |
| TheBay:
--- Quote from: Monkeh on December 13, 2013, 04:37:03 pm --- --- Quote from: pappkopp on December 13, 2013, 01:21:53 pm --- --- Quote from: Monkeh on December 12, 2013, 10:26:49 pm --- --- Quote from: pappkopp on December 12, 2013, 10:26:02 pm ---Regarding the VIA chip, isn't that the Disk Controller? --- End quote --- No.. did you read the datasheet you posted? --- End quote --- I guess that the "Floppy disk" is under the genre of Compact flash disk? --- End quote --- Guessing won't get you very far. --- End quote --- This forum needs a like button :) |
| Tinkerer:
--- Quote from: pappkopp on December 12, 2013, 12:20:55 pm --- --- Quote from: nowlan on December 12, 2013, 12:00:55 pm ---Just get a compact flash card and reader and put linux on it. I doubt you need to worry about signed images etc. --- End quote --- Yeah, i have an compact disk reader. But when i connect it to my reader it won't mount under any circumstances, when i see the debug message on my Linux system it whines about bad sectors and I/O errors. Therefore no mounting for that card (would be fun to see the contents of it tho) I will hook up an flash card as soon as possible,. I will keep you guys updated :):) Kind Regards --- End quote --- If that flash card has bad sectors, you very likely have corruption. |
| tja:
I've just acquired one of these devices, and have spent a little time trying to reverse engineer it. I took a slightly different approach to video output to the OP, and just soldered a VGA socket into the unpopulated spot on the MB - works fine. Major problem is I have not been able to get into the BIOS at all, have rebooted many times and pressed all manner of keys - nada. This is what it says on boot up: Validating firmware CRC... CKIMAGES v2.1 Validating files... CRC is valid. Booting into firmware… LINLD v0.97 Kernel command line: root=/dev/ram0 rw console=ttyS1,115200 ramdisk_size=163840 ide=nodma Decompressing Linux... Parsing ELF... done . Booting the kernel . It appears to boot into FreeDOS, which then loads Linux. It is possible to interrupt the boot process and explore from a FreeDOS prompt, but I haven't found out much. Very limited range of FreeDOS commands available. I have extracted the BIOS flash rom (a 39sf040) and dumped it using an Arduino lash-up, but I don’t know what to do next - what format should I save the data as, and what utilities can I use to manipulate the BIOS, if any? All help gratefully received. Hi-res photos of the board, BIOS dump and boot photos here: https://drive.google.com/open?id=1WMaan81lUdivlR2-s8uoYmRYDbtQXcHQ Cheers Tim |
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